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參數資料
| 型號： | ISP1160BM |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | Embedded Universal Serial Bus Host Controller |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP64 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-414-1, LQFP-64 |
| 文件頁數： | 33/88頁 |
| 文件大小： | 2044K |
| 代理商： | ISP1160BM |
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Philips Semiconductors
ISP1160
Embedded USB Host Controller
Product data
Rev. 04 — 04 July 2003
33 of 88
9397 750 11371
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
9.8.1
Using an internal OC detection circuit
The internal OC detection circuit can be used only when V
CC
(pin 56) is connected to
a 5 V power supply. The HCD must set AnalogOCEnable, bit 10 of the
HcHardwareConfiguration register, to logic 1.
An application using the internal OC detection circuit and internal 15 k
pull-down
resistors is shown in
Figure 26
. In this example, the HCD must set both
AnalogOCEnable and DownstreamPort15Kresistorsel to logic 1. They are bit 10 and
bit 12 of the HcHardwareConfiguration register, respectively.
When H_OCn_N detects an overcurrent status on a downstream port, H_PSWn_N
will output HIGH, a logic 1 to turn off the 5 V power supply to the downstream port
V
BUS
. When there is no such detection, H_PSWn_N will output LOW, a logic 0 to turn
on the 5 V power supply to the downstream port V
BUS
.
In general applications, a P-channel MOSFET can be used as the power switch for
V
BUS
. Connect the 5 V power supply to the drain of the P-channel MOSFET, V
BUS
to
the source, and H_PSWn_N to the gate. Call the voltage drop across the drain and
source, the overcurrent detection voltage (V
OC
). For the internal overcurrent detection
circuit, a voltage comparator has been designed-in, with a nominal voltage threshold
(
V
trip
) of 75 mV. When V
OC
exceeds V
trip
, H_PSWn_N will output a HIGH level,
logic 1 to turn off the P-channel MOSFET. If the P-channel MOSFET has a R
DSon
of
150 m
, the overcurrent threshold will be 500 mA. The selection of a P-channel
MOSFET with a different R
DSon
will result in a different overcurrent threshold.
’n’ represents the downstream port number (n = 1 or 2).
Fig 26. Using an internal OC detection circuit.
004aaa066
ATX
1
≥
0
Reg
PSW
OC select
OC detect
regulator
VCC
H_OCn_N
VOC =
+
5 V
VBUS
H_PSWn_N
H_DMn
H_DPn
HC CORE
C/L
SIE
USB
downstream
port
connector
15 k
(2
×
)
47 pF
(2
×
)
22
22
ISP1160
VBUS
+
5 V
P-Channel
MOSFET
bit 10
bit 12
HcHardware
Configuration
HcHardware
Configuration
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1160BM,557 | 功能描述:USB 接口集成電路 USB 1.1 HOST CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1160BM/01 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller |
| ISP1160BM/01,118 | 功能描述:USB 接口集成電路 USB HOST CTRL RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1160BM/01,151 | 功能描述:USB 接口集成電路 DO NOT USE ORDER -T OR NO "-" RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1160BM/01,157 | 功能描述:USB 接口集成電路 USB FULL SPEED HOST RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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